12090143 has 4 divisors (see below), whose sum is σ = 13020168. Its totient is φ = 11160120.

The previous prime is 12090131. The next prime is 12090151. The reversal of 12090143 is 34109021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12090143 - 2⁶ = 12090079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12090173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464993 + ... + 465018.

It is an arithmetic number, because the mean of its divisors is an integer number (3255042).

Almost surely, 2^12090143 is an apocalyptic number.

12090143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12090143 is a deficient number, since it is larger than the sum of its proper divisors (930025).

12090143 is an equidigital number, since it uses as much as digits as its factorization.

12090143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930024.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 12090143 is about 3477.0882933857. The cubic root of 12090143 is about 229.5146855610.

Adding to 12090143 its reverse (34109021), we get a palindrome (46199164).

It can be divided in two parts, 12090 and 143, that multiplied together give a triangular number (1728870 = T₁₈₅₉).

The spelling of 12090143 in words is "twelve million, ninety thousand, one hundred forty-three".